how do i link the same gear into 2 slots and a default glamour?

[Callinon]

There actually is a way: use gear that is incompatible with the class it is being applied to.

In this case, to make BLM have the default gear appearance, you'd put SMN or RDM relic gear on the plate. IIRC it has to be from the same group of classes so the glamour will be applied and not just fail.

I hadn't thought of that. Yeah that'd probably work. But it'd be a very niche use case in which the user wants to use job-specific gear as the glamour and not just like, a company tabard on the SMN and a raincoat on the RDM or something.